Manifold heater



Patented Nov. 27.1923.

guNi'rEo j. STATES Ronin n.- TASCHE, or LA cnossn, wisconsin.

Y MANIFOLD. HEATER. s

Applicationnied may is, 1922. serial No. 561,951.

TaaZZ whom it, may concern.' y. l

fBe it known that I, Anciirn E. Tn'UscHn, a citizen of the UnitedStates, and a resi-y dent of La Crosse, in the county of La Grosse andState of Wisconsin, have invented a new and useful Improvement inManifold Heaters, ofwhich the following is a full, clear, and exactdescription.v

My invention relates to improvements in manifold heaters, and itconsists in the com which is extremely light and may be connected with asource of current so as to quickly heat the intake manifold.y y

A further object of my invention isto provide a device of the characterdescribed which has a novel heating element.

A further object of my invention is to provide a device of the characterdescribed which is simple in construction and which is not likely toeasily get out of order.

A further object of my invention is to provide a device of the characterdescribed which is durable and eilicient for the purpose intended, andwhich is relatively inexpensive to manufacture. y y l `Other objects andadvantages will appear in the following specification, and the novelfeatures of the invention will be particularly pointed out intheappended claims. y -My invention is illustrated in the accompanyingdrawings, forming part of this application, in which- Figure 1 is a sideelevation of the device shown operatively applied to an intake manifold,y

Figure 2 is a plan view of the opposite side of the device shown inFigure 1,

Figure 3 is a longitudinal section through i Ythe device, and

of Figure 8.

In carrying out my invention, I provide Figure 4 is a section along theAline 4-4 two plates 1 and 2'which are preferably made of valuminum andwhich are of the shape shown in Figures 1 and 2. The present device isdesigned so as to fit the intake manifold 3 of a Ford automobile, but itis obvious `that the device may be manufactured indifferent shapes andsizes so as to be readily secured to the intake manifolds ofvariouscars. The plates 1 and. 2 are secured to each other by cap screws 4. Asclearlyshown in Figure 3, the plateY 2 has spring clamps 5 which enga ewith the manifold 3 and hold the device in place (see Figures 1 and Indisposing the device upon the manifold, the device is moved downwardlywith respect to the manifold so as to cause the upper clamp 5 to engage,and is then swung clockwise with respect to Figure 1 so as to cause thelower clamp 5 to engage with the lower portion of the manifold 3. Inthis manner, the device is rigidly secured in place.

The inner surface of the plate 2 is grooved at 6 so Vas to closelyengage with the portion 7 of the manifold. It will be observedA fromFigure 2 that the groove 6 is shaped the` same way as the shape of theportion 7, and

kthe curvature of the groove is designed so as to closely contact allthe wall portions of the manifold` covered by the heater. Thiskconstruction is a decided improvement in the artv of manifold heaters,since it provides a.

device which, when assembled, practicallyT forms an integral part of themanifold and obviates any dead air space between the heater and themanifold. In this manner the heater isadapted to function at its maximumeiiiciency. y

`The plates 1 and 2 have 4a heating element, indicated generally at 8,which is disposed therebetween, and which is in electrical connectionwith terminals 9 and 10. As clearly shown in Figure 1, the terminals 9and 10 are connected by wires 11 witha plug 12 which is adapted to beinserted in any ordinaryv light socket. The cord 11 may be of anydesired length so `as to readily reach from the heater which is securedto the manifold 3 to thenearest electric light socket. The heatingelement 8 comprises a strip of mica 13 ofthe shape shown in Figure 4, ahigh resistance heating wire 14 and opposed mica covering sheets 22and-23 one on each sidepof the wire. The wire 14 is preferably flat and iswound about the plate 13 in the manner shown in Figure 4. The ends ofthe wire 141 are connected to the terminals 9 and 10, whereby the wire111 is in series with the terminals 9 and 1Q. The wire 14. is woundabout the plate 13 in such a manner that the strands are parallel withrespect to each other and do not engage with one another, whereby theshort circuiting of the Wire is obviated. rllhe heads of the terminals 9and 10 have metal plates 15 disposed adjacent thereto, these platesreceiving the ends of the wire 14 whereby a positive connection is madebetween the terminals and the wire.

The terminals 9 and 10 are insulated from the plates 1 and 2 by means ofmica bushings 16 and 17 and mica caps 18 and 19, respectively. In thismanner the terminals 9 and l0 are entirely insulated from the plates 1and 2 and are only in electrical connection with the Wire 111 asheretofore described. The sheet 13 is not quite as wide as the plates 1and 2, and is bounded by a mica filler 2O (see Figure 4). rl`his filler2O effectually protects the heating element 8. It will further be notedthat the wall of the plate 2 is relatively thinner than the wall of theplate 1 and that an asbestos piece 21 is disposed between the heatingelement 8 and the plate 1. The heating element 8 is also insulated fromthe plates 1 and 2 by means of mica sheets 22 and From this constructionit will be apparent that the heat radiated from the member 8 is directedtoward the plate -2, since the plate 1 is insulated by the asbestospiece 21. In this manner, practically all of the heat generated by themember S is conducted to the manifold 3 by means of the plate 2.

From the foregoing description of the various parts of the device, theoperation thereof may be readily understood. As heretofore stated, thedevice is readily portable, and may be easily secured to the intakemanifold of the car. The groove 6 is so fashioned that practically theentire outer surface of the plate 2 engages with the intake manifold 3.In this manner all of `the heat generated by the element 8 istransmitted to the manifold 3. The spring clips 5 permit the heater tobe readily secured to the manifold and to beheld in adjusted positin.

When applying the device to the manifold, the upper clip 5, and then thelower clip 5 is disposed in place and the plug 12 inserted in theelectric light socket (not shown). The current may then be turned on fora few minutes so as to heat the manifold 3. Since practically all of theheat from the element 8 passes into the manifold 3, current through thedevice may be left on only for a very short period. During this period`the heater has etfectually warmed the manifold so as to warm the intakegases. lt is well understood that when the intake gases to the internalcombustion engine are warmed, the engine may be readily started. l' fith the present device the heating of the gases is effectuallyaccomplished. Vhen the engine has been started, the device may beremoved from the manifold 3 by merely releasing the clips 5 from themanifold. The plate 1 forms a good conductor for heat, since it is madeof aluminum and. it will be noted, that practically all of the heat fromthe element 8 will pass into the plate 2 and not into the plate 1, sincethe plate l. is insulated by means of the asbestos lining` 21. Thebushings 16 and 1T and the insulating sheets and are i)referably made ofmica` because this material is not likely to smoke when heated to arelatively high temperature. 'lhc device may be readily moved eventhough the current is on, since the plate 1 is cool enough to permit theready handling of the device. As heretofore stated, the device is verysimple in construction and forms an effective and eilicient means forheating the intake gases of the manifold. rlie device is so constructedthat it forms a practical inte gral unit with the manifold, thusobviating any dead air space between the manifold and the heater.

l cla-im:

1. A manifold heater having a member of which one side is formed to bedirectly in contact with the manifold substantially throughout theextent of the member, the opposite face vof the member lyingsubstantially in a plane, a heating element lying in a similar plane andapplied to direct contact with the plane surface of the member, andmeans for securing the heater to the manifold.

2. A manifold heater having the side thereof which engages with amanifold fashioned so as to closely conform to and. contact the contourof the surface of the manifold covered by the heater, thereby obvi atingany dead air spaces between the heater and the manifold, and springclips carried by said heater in diagonal relation to each other andbeing adapted to firmly hold said heater in adjusted position on themanifold, said clips permitting the heater to be readily assembled to orremoved from the manifold.

3. A manifold heater comprising two longitudinal plates of a heatconducting metal secured to each other, a heating element disposedbetween said plates, the inner surface of one of said plates beingfashioned so as to closely engage all portions of the surface of amanifold which the heater covers, and a sheet of heat non-conductingmaterial disposed between said heating element and the other plate.

4. A manifold heater comprising a pair of heat conducting metal plateslying in opposed planes secured to each other, Aterminals carried bysaid plates and insulated therefrom, a piece of heat non-conductingmaterial disposed between said plates, two pieces of mica disposedbetween one of said plates and said heat non-conductor piece, a thirdVpiece of mica disposed between said first named pieces, and a wireheating element wound around said third named piece of mica, the loopsof said wire being spaced from each other and the ends of said wiresbeing connected to said terminals.

5. In a manifold heater the combination of a complete member having oneside adapted to contact a single side of a manifold, with a heatingelement in direct contact with the opposite side of the member and meansfor securing the heater to the manifold.

6. In a manifold heater the combination of a member having one sideadapted to contact a single side of a manifold throughout the extent ofthe member, with heating means secured to the member, and means forsecurin the heater to the manifold.

gli. In a manifold heater the combination the extent of the member, withheating and having another and differential surface means secured to thedifferential surface of the member, and means for securing the heater toa manifold.

8. In a manifold heater the combination ofa member having one sideadapted to contact a single side of a manifold substantially throughoutthe extent of the member and having a differential opposite side, with aheating element secured to the opposite side of the member throughoutthe extent of the element, and means for securing the heater to themanifold.

9. In a manifold heater the combination of a plate of a heat conductingmetal having one side fashioned so as to Contact all portions of themanifold covered by the heater,

\ the opposite side of the plate having a sur face out of conformitywith the innerface thereof, with a heating element fashioned to conformto and be in direct contact with the outer face of the plate, a sheet ofheatnonconducting material disposed over the outer face of the elementand covering the' same, and means for securing the heater to themanifold.

ARCI-IIE E. TAUSCHE.

